TY - RPRT TI - A new strategy for earthquake focal mechanisms using waveform-correlation-derived relative polarities and cluster analysis: Application to the 2014 Long Valley Caldera earthquake swarm AU - David R. Shelly AU - Jeanne L. Hardebeck AU - William L. Ellsworth AU - David P. Hill PY - 2016 DO - 10.1002/2016jb013437 UR - https://pubs.usgs.gov/publication/70193722 ID - 70193722 ER -